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swim bladder diesase or not?

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so 3 days ago i noticed 2 of my neon's not swimming very well they had trouble going to the bottom. so i researched about it. by the time i made my plan and knew what i was gonna do they were fine! racing each other to the bottom and the top. so i thought i was just imaging it. but the next day the same problem. then it was gone... etc.
they are on a dried diet (won't eat frozen food for some reason)
the water quality is excellent though (0,0,0)
should i feed them some pea's or not feed them for a few days? should i just leave it?
whats up with my neon's ?
thanks.

I've read that if a fish goes from the bottom to the top of the tank to fast for food (as a example) it can cause what your describing. I would try putting your hand in the tank and then releasing the food and see if that helps. How do you prepare the frozen food? If you don't already try thawing it in some tank water then feeding might perk their interest.

If its temporary it might be caused by the dry foods you are giving them. Certain dry foods tend to swell when wet. Assuming a fish eats a lot of food to fill out its stomach and then the food swells some more, then it could somehow compromise swim bladder function. Once the food is digested then the fish is "fine" again until the next meal and so on.

If its temporary it might be caused by the dry foods you are giving them. Certain dry foods tend to swell when wet. Assuming a fish eats a lot of food to fill out its stomach and then the food swells some more, then it could somehow compromise swim bladder function. Once the food is digested then the fish is "fine" again until the next meal and so on.

i think this is what is happening. what should i feed them than? out of all these foods which ones best.
nutrafin max micro granules, nutrafin max tropical fish flakes, tetrafin goldfish flakes.
or what food would you recommend.

For me what worked was to simply release my flaked or pelleted food below the waterline that way the fish are not taking in air when gulping for food at the surface ( I believe Limming mentioned the same strategy above)...can't hurt to try.

I don't know how much you feed, but as a general suggestion, try feeding less. Nobody overfeeds on purpose but most aquarists do. Fish can make do with very little food. If they don't completely fill themselves up then there still is some "room" in case food swells. Or else try feeding them less per meal but more frequently.